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Trials Intake/Carburetion - 2 stroke Jetting, Reeds, Air Filters, etc.


 
 
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Old 01-29-2017, 12:13 PM
funmachines funmachines is offline
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Join Date: Oct 2009
Location: Santa Cruz mtns
Posts: 48
Default Strange issue with running lean

I've been trying to solve an issue with my 97 JTX 270 and can't seem to pinpoint it. It runs borderline OK when I just start it and then gets very lean and it's not the carb - I've rebuilt it and it is clean, new float valve, etc. I also replaced the crank seal behind the stator and put in new reeds. It seems to me that there is either some other air leak I need to find or I have a problem with my gas flow from the tank. I'll take off the tank and check that but I don't think that is it as I get plenty of flow out the fuel hose and have replaced the filter I have in line.

Any ideas? Should I seal up the motor and look for leaks?

Thanks
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06 Gas Gas EC 300
97 Gas Gas JTX 270 trials
02 E440 Cannondale plated
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